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This is called the "Thermosphere"
The thermosphere is the biggest part of the Earth's atmosphere. This layer is very important because it protects us on earth from UV radiation. UV radiation is harmful for humans skin and their hair. It is also extremely hard to breathe in this layer because the thermosphere is made up of mostly nitrogen and oxygen.
Answer:
The term <u>pulse</u> refers to the alternating surges of pressure in an artery that occur with each contraction and relaxation of the left ventricle.
Explanation:
The heart is an organ that has the function of pumping blood to the body through the arteries. The right atrium receives the blood that is sent to the lungs through the right ventricle. In the lungs, the blood is oxygenated. Then, the oxygenated blood is received by the left atrium and is sent through the left ventricle to the rest of the organism. This cycle is repeated constantly between 70 and 80 times per minute which determines the heart rate. Each time the heart ejects blood and it circulates through the arteries the way to feel or perceive it is by palpating the pulse.
The pulse is then the pressure wave caused by the expansion of the arteries as a result of the circulation of blood pumped by the heart. It is usually obtained in parts of the body where the arteries are closest to the skin, such as in the wrists or neck.
Answer:
there is a possibility that the neuron can fire back at the potential neuron.
Explanation:
At a chemical synapses an action of potential triggers the Presynaptic neuron to the postsynaptic neuron either more or less likely to fire its own action of its potential neuron.
Answer:
One type of control that occurs at the DNA level is the regulator genes. The regulator genes synthesize a repressor molecule that binds to the operator and stops transcription of the structural genes. Whenever there is enough amount of structural genes made, a repressor molecule will bind to the operator region and stop further transcription.
One type of control that occurs at the RNA level is RNA splicing. By this method, different proteins can be made by a single RNA transcript.